农业环境科学学报2016，Vol.35Issue(11)：2094-2100,7.DOI:10.11654/jaes.2016-0776
不同胶体类型灌溉水对塿土中重金属解吸及运移的影响
Effect of different colloids in irrigation water on the desorption and migration of heavy metals in Lou soil
摘要
Abstract
A series of desorption and column leaching experiments were conducted with three types irrigation water(inorganic, organic and pure irrigation water). The experiment were designed to simulate colloidal suspensions of montmorillonite and humic acid, and distilled water, respectively. The contents of nickel(Ni), cadmium(Cd)and lead(Pb)in the soil were analyzed. The results showed that the des-orption capacity of Cd was greater than that of Ni and Pb in three desorption irrigation water. The total desorption rate of Cd ranged from 16.34%to 26.51%. The inital desorption rates of Cd and Ni were higher than the second desorption rates, while Pb had the contrary trend. Within the three irrigation waters, the organic water has the strongest desorption capacity for Cd and Ni, while the inorganic irrigation water has the strongest capacity for Pb. The results of the soil column leaching experiment showed that Cd was the most, while Pb was the least mobile element in the soil among the three elements. The different irrigation waters had significant effect on the migration of Cd after 30 days leaching, on the migration of Ni after 45 days leaching, but had no effect on the migration of Pb during the experiment.关键词
灌溉水/土壤/重金属/解吸/迁移Key words
irrigation water/soil/heavy metals/desorption/migration分类
资源环境引用本文复制引用
谢冰怡,姜延吉,孙慧敏,全敏,胡震,尚浩博..不同胶体类型灌溉水对塿土中重金属解吸及运移的影响[J].农业环境科学学报,2016,35(11):2094-2100,7.基金项目
国家自然科学基金项目（21207106，21207107）；陕西省自然科学基础研究计划项目（2014JQ5184，2012JQ5012）；中央高校基本科研业务专项 （）
